ean

If I'm not mistaken most people prefer SAE rather than STD. I think STD corrects to around 60 degrees and SAE is somewhere around 70 among other measurements.

CarHopper

Don't divide.

409 x .18 = 73.62 + 409 = 482.62. Same as 409x1.18

ean

Thanks. Even better.

chrisridebike8

You do divide by the amount of power you expect to reach the tires, 82% in this case. Try going backwards from the result I got. 499x0.82. You will find that the answer is 409 whp.

Edit: I just reread my post and changed it. It came off sounding like I am being a *****. Sorry!

glennhl

Actually Chrisridebike is correct. If you have a 18% loss from the crank to the rear wheels, you have a 18% loss from the higher crank number. So 409/(1-.18) = 499 hp. Or look at it this way, you lose 18% from 499 so 499 x .18 = 90 hp loss resulting in 499 - 90 = 409 whp.

Bardman

IMO this is a supply side issue rather than demand (other than the aggregate numbers of AMGs vs local cars are considerably smaller). No-one is offering custom tunes for AMGs (or those that do are not very vocal about it). I'm sure the demand would be there if people offered it.

alexmtl

This thread makes me sad. Please Bardman, come back from the dyno with good news

papashango

Sounds like me with a PP 2011 C63 would be wasting money if I went the tuning route then? Cause that's not much of an increase at all. I have no idea what this blip everyone talks about is but I doubt it's worth doing the tune just for that on a PP car!

Bardman

Check out the following quote from EAN:

Its not just about peak gains. The gap between the graphs is what counts. Low RPM torque improvements have quite an impact on daily driving.

Having said that, I'm not sure what else you get with a PP, but if you are just after the HP improvement over stock it seems there is limited benefit paying over the odds for a PP car if you are intending to tune it.

Its horses for courses, however, I'm more than happy paying the premium for a 507 because of all the other extras that come with it (and with Australian pricing, its not really a significant % increase over stock pricing).

crazy1eye

My 2010 P31 faired a little better, but I do also have secondary cat delete. Both before & after dyno sessions were done with similar weather conditions...

https://mbworld.org/forums/c63-amg-w...back-dyno.html

Also this was with the V4 tune, now they say the V5 didn't add power, but it does feel better. Of course with tunes, there's also the added benefit of the speed limiter raised to, I believe 200mph or 320kph

It's funny how you see cases like this, then others who gain abnormal amounts doing same day dyno runs, guess some dyno's & or dyno operators are better than others, dunno.

kimeran

Here in South Africa we have Motronix who only does custom tunes

loungn14

we custom tune AMG's on a daily bases. All you would need to do is setup the time with your dyno shop and a appointment with us. We can send you files via the mygenius handheld (or if you attend an event we are traveling to) based on corrections for the car/dyno readout.

We travel worldwide monthly doing just this... We we just in jakarta, and have the new york area scheduled for next month! Or, you can remote tune like indicated above...

odonnks

What software package are you using ?
Why not offer software that allows the user to vary the tune or apply changes they might like to test I stead of the Mygenius package that provides only one variation of a tune?

loungn14

we have numerous software packages that we use. We thought about offering something like that but the liability and costs associated is just too high.

But like I said, we can easily custom tune the car as needed.

Bardman

Great news! I got the tune loaded this morning. I had incorrectly generated the ID file, so when the tune went to apply it didnt recognise the ECU properly. I regenerated the ID file, EC added the tune to this and all was good.

I still plan to do the dyno runs, and will even attempt a flash back to stock so I can do before and after on the same day. Rather than clutter this thread up though I will post up my results in a new one.

chris135b

Fantastic, thanks Bardman. It will be interesting to see how much "more" one can squeeze out of the stock 507 tune. I know a few others have done the tune on the 507 with varying results (I believe some folks in Toronto did this and posted up results). Looking forward to seeing your results for a comparison!


Chris

Spearsba

Thanks for the schooling on this. All makes sense to me. Thanks again....

Autosport7

I have to imagine there are a few out there that could probably manage to adjust settings properly to attain a few more ponies safely, but for every one that could do it, there would be 50 cowboys blowing up their cars and trying to hold EC accountable because "they told me so...".
I am sure the handheld tune is probably on the conservative side of things, but lets just say you are able to tweak another 5hp out of the tune, is that worth the chance of blowing up your amg?


Now maybe if EC offered it and made people sign waivers to those who really wanted it, then maybe. But I am sure that tune would jump up in cost due to any liability they would have to take into account for.....

Wobble64

Bardman, any news on those dyno-runs you were planning?

Bardman

I had a baby in the mean time so have been a little distracted.

Will book it in the next few weeks.

Wobble64

That's actually one of the 'better' excuses! :-)


Congratulations!!!

95gsrturbo

any updates?
still looking for more graphs